[patch 5/7] x86/pci: Select CONFIG_PCI_LOCKLESS_CONFIG

From: Thomas Gleixner
Date: Thu Mar 16 2017 - 19:12:35 EST


All x86 PCI configuration space accessors have either their own
serialization or can operate completely lockless (ECAM).

Disable the global lock in the generic PCI configuration space accessors.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/x86/Kconfig | 1 +
1 file changed, 1 insertion(+)

--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -165,6 +165,7 @@ config X86
select HAVE_UNSTABLE_SCHED_CLOCK
select HAVE_USER_RETURN_NOTIFIER
select IRQ_FORCED_THREADING
+ select PCI_LOCKLESS_CONFIG
select PERF_EVENTS
select RTC_LIB
select RTC_MC146818_LIB